Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o Win-Loss, quando a porcentagem de vitórias é .456?
 ###Tabelas: CREATE TABLE revenues_from_stamp_duties (revenues_from_stamp_duties_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Stamp duty reserve tax VARCHAR, Standard Stamp Duty VARCHAR, Standard Duties Total Revenue (in €million) INT, over Total Tax Revenue (in %) VARCHAR, over GDP (in %) VARCHAR) CREATE TABLE south_group (south_group_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Match INT, Points INT, Draw INT, Lost INT) CREATE TABLE sheffield_united_career (sheffield_united_career_id AUTO_INCREMENT PRIMARY KEY, Division VARCHAR, League Apps (Sub) INT, League Goals INT, FA Cup Apps (Sub) VARCHAR, FA Cup Goals INT, FL Cup Apps (Sub) INT, FL Cup Goals INT, Other Apps INT, Other Goals INT, Total Apps (Sub) VARCHAR, Total Goals INT) CREATE TABLE all-time_head_coaches (all-time_head_coaches_id AUTO_INCREMENT PRIMARY KEY, Coach VARCHAR, Years VARCHAR, Win-Loss VARCHAR, Win % VARCHAR, Conference Titles VARCHAR) CREATE TABLE jersey_progress (jersey_progress_id AUTO_INCREMENT PRIMARY KEY, Stage INT, Winner VARCHAR, General classification VARCHAR, Points classification VARCHAR, Mountains classification VARCHAR, Combination classification VARCHAR, Team classification VARCHAR)  
SELECT Win-Loss FROM all-time_head_coaches WHERE Win % = .456